In the Hyperspace Solution for the Apple Device Enrollment Program there is a process in which returns will automatically auto-return. When first installing Hyperspace a cron job is activated on the server. If the cron job isn't running due to an issue on the server, your returns will not auto-run.
Please advise your IT department to apply the following fix:
1. ssh into the server with root
2. enter : crontab -e -u www-data ( Ubuntu ) or apache ( Centos )
3. enter : /5 * php -f {PATH APPLE PACKAGE}/public/cron.php hypercron
This process will restart your Returns Scheduler to run every 5 minutes.